Is it permissible for a father to differentiate between his children in lending and not achieve financial justice among them?

It is legally reprehensible for a father to favor one of his children in giving without a legitimate reason, such as poverty or illness. This includes gifts, charity (sadaqa), endowments (waqf), loans, permission to utilize benefits, and even verbal interactions and affection. Scholars have differed regarding the ruling on this, oscillating between dislike (karaha) and prohibition (tahrim). If a father violates this, he must reclaim the loan or lend a similar amount to the rest of his children. As for the favored son, he must appease his siblings or return what he was favored with. It is permissible for a son to demand justice from his father with politeness and gentleness.